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Dimpled Drainage Membrane with Fabric

HDPE Dimpled Drainage Membranes with Filter Fabric for Drainage and Protection

  • Protection layer for waterproofing membranes
  • Compressive strength of 250 kN/m²
  • Retaining and basement walls
HDPE dimple drainage membrane with geotextile filter fabric foundation wall New Zealand

Product Overview

MERZ Dimpled Drainage Membrane is a range of high-performance HDPE dimpled drainage membranes designed for effective drainage and protection of underground walls, foundations and roof gardens. The membranes feature a robust dimpled core that creates continuous drainage channels, combined with a top-laminated non-woven polypropylene filter fabric to prevent clogging by soil and fines.

The integrated filter fabric ensures that the dimple structure remains open and functional over the long term, maintaining high drainage capacity even in challenging ground conditions. MERZ Drain membranes provide excellent mechanical strength, high pressure resistance and long-term durability, making them ideal for use on sloping sites, water-impermeable soils and substructure drainage systems.

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Recommended Uses

  • Foundation wall drainage and protection
  • Basement and substructure drainage systems
  • Perimeter insulation protection
  • Drainage on sloping sites
  • Roof gardens and landscaped podiums
  • Drainage systems in water-impermeable soils

Advantages​

  • HDPE dimpled membrane with high compressive strength
  • Top-laminated non-woven filter fabric keeps drainage channels unclogged
  • Guarantees long-term drainage performance
  • Excellent mechanical, tear and puncture resistance
  • Root-resistant and suitable for landscaped areas
  • Chemical resistant and drinking water neutral
  • Air chamber promotes rapid water discharge
  • Ideal for buildings on sloping sites

Product Variants

MERZ Drain MS800-150C

Drainage Membrane with Filter Fleece

MERZ Drain V combines a high-tensile dimpled drainage membrane with a corrosion-proof filter fleece, providing reliable drainage and wall protection.

MERZ Drain Plus

Drainage Membrane with Filter Fleece and Slip Foil

MERZ Drain Plus incorporates an additional sliding foil layer, designed to reduce point loading and accommodate settlement or movement in the backfill.

MERZ Dimpled Drainage Membrane Packing​

2m x 20m rolls

Color: Black

Media & Downloads​

Frequently Asked Questions about Dimpled Drainage Membrane

What is the purpose of a drainage membrane?

Drainage membranes collect and channel groundwater away from foundations and underground structures, reducing hydrostatic pressure and protecting waterproofing systems.

Why is the filter fabric important?

The non-woven filter fabric prevents soil and fines from clogging the drainage channels, ensuring long-term drainage performance.

Can MERZ Drain be used on sloping sites?

Yes. The air chamber and dimple structure provide enhanced drainage capacity, making it particularly effective on sloped ground.

Is MERZ Drain suitable for roof gardens?

Yes. Both MERZ Drain V and MERZ Drain Plus are suitable for roof gardens and landscaped applications due to their drainage capacity and root resistance.

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